The Noco GB40 1000 Amp UltraSafe Lithium Jump Starter Power Bank is a portable lithium-ion battery jump starter pack that delivers 1,000-amps (7,000 J3S) for jump starting a dead battery in seconds.Lithium battery jump starter rated at 1,000 Amps (7,000 Joules3S)Spark-proof connections and reverse polarity protectionRecharges USB devices, like smartphones, tablets, and more100 lumen LED flashlight with multiple modes, including SOSJump starts petrol engines up to 6l, and diesel up to 3lProvides up to 20 jump starts on a single chargeThe Noco GB40 1000 Amp UltraSafe Lithium Jump Starter Power Bank features a patented safety technology that provides spark-proof connections and reverse polarity protection making safe and easy for anyone to use. The Jump Starter has an easy and simple to use interface. LED status indicators display the internal lithium batteries charge level and charging status. Error indicators show when connected in reverse polarity or temporarily disabled for thermal pr